EMC Proven Professional. Copyright © 2012 EMC Corporation. All Rights Reserved. NAS versus SAN NAS – Architecture to provide dedicated file level access on the network – A NAS is effectively a dedicated OS, providing file management functions – a file server – Access at file level rather than block level, thus can be poor for database – Architecture to allow operating system to attach to remote disks, but appearing to the operating system to be locally attached SAN – Operating system maintains the file system – Access is at the block level – ideal for database, server data, high usage file server data

EMC Proven Professional. Copyright © 2012 EMC Corporation. All Rights Reserved. Network Storage and Cloud Storage Network attached storage (NAS)

EMC Proven Professional. Copyright © 2012 EMC Corporation. All Rights Reserved. Network Storage and Cloud Storage Storage area network (SAN)

EMC Proven Professional. Copyright © 2012 EMC Corporation. All Rights Reserved. Data Center Core elements of a data center  Application  Database management system (DBMS)  Host or Compute  Network  Storage These core elements work together to address data-processing requirements Module 1: Introduction to Information Storage4 It is a facility that contains storage, compute, network, and other IT resources to provide centralized data-processing capabilities. Data Center

EMC Proven Professional. Copyright © 2012 EMC Corporation. All Rights Reserved. We need to guarantee Module 1: Introduction to Information Storage5 Availability Data Integrity Security Capacity Scalability Performance Manageability

EMC Proven Professional. Copyright © 2012 EMC Corporation. All Rights Reserved. Evolution of Storage Architecture Module 1: Introduction to Information Storage6 Department 1 Server Department 2 Server Department 3 Server Server-centric Storage Architecture Information-centric Storage Architecture Department 1 Server Department 2 Server Department 3 Server Storage Device Storage Network

EMC Proven Professional. Copyright © 2012 EMC Corporation. All Rights Reserved. Physical Disk Structure Module 2: Data Center Environment7 Sector Track Platter Sector Track Cylinder Spindle Platter

EMC Proven Professional. Copyright © 2012 EMC Corporation. All Rights Reserved. Key Components of an ISS Module 4: Intelligent Storage System8 Host Connectivity Front End Back End Cache Intelligent Storage System Physical Disks Storage Network

EMC Proven Professional. Copyright © 2012 EMC Corporation. All Rights Reserved. Understanding Fibre Channel (A LAN Protocol) High-speed network technology  Latest FC implementation supports speed up to 16 Gb/s Highly scalable  Theoretically, accommodate approximately 15 million devices Module 5: Fibre Channel Storage Area Network9 ClientsStorage ArraysApplication Servers IP Network FC SAN

EMC Proven Professional. Copyright © 2012 EMC Corporation. All Rights Reserved. IP SANs (WAN Protocols) Provides SAN access over any IP network (Think Wide Area Networks)  IP SAN transports block-level data over IP network  IP is being positioned as a storage networking option because:  Existing network infrastructure can be leveraged  Reduced cost compared to investing in new FC SAN hardware and software  Many long-distance disaster recovery solutions already leverage IP- based networks  Many robust and mature security options are available for IP network Module 6: IP SAN and FCoE10

EMC Proven Professional. Copyright © 2012 EMC Corporation. All Rights Reserved. General Purpose Servers Vs. NAS Devices Module 7: Network-Attached Storage11 Applications Print Drivers File System Operating System Network Interface File System Operating System Network Interface Single Purpose NAS Device General Purpose Servers (Windows or UNIX)